The High Court in Glasgow heard that Mr Gallagher, 37, arranged to meet McFarlane at 4pm on January 15, behind the pavilion at Argyle Park, Alexandria.

Dad-of-two Mr Gallagher was anxious, but told his girlfriend: “I’ll just get a wee stab and that will be that.”

Instead he bled to death after McFarlane stabbed him twice, severing a major vein and an artery.

Mr Gallagher agreed to the pact after weeks of phone and text threats from McFarlane.

Lord Turnbull last week described the attack, which resulted in two 14cm deep stab wounds, as “callous and most vicious”. The judge said: “What you did has not only ended the life of Mr Gallagher, but has affected forever the lives of those who are close to him.”